METHOD AND SYSTEM FOR THE EXAMINATION OF SPECIMEN USING A CHARGED PARTICLE BEAM

The present invention provides a method for the examination of specimen with a beam of charged particles. The method provides one or more images of the specimen made with different view angles, so that, compared to a single image of the specimen, a lot of additional information about the specimen ca...

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Main Authors GOLDENSHTEIN, ALEX, ADAMEC, PAVEL, HAAS, NADAV, BEN-AV, RADEL, PEARL, ASHER, PETROV, IGOR
Format Patent
LanguageEnglish
French
Published 21.06.2001
Edition7
Subjects
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Abstract The present invention provides a method for the examination of specimen with a beam of charged particles. The method provides one or more images of the specimen made with different view angles, so that, compared to a single image of the specimen, a lot of additional information about the specimen can be accessed. The different view angles (angles of incidence) are achieved by tilting the beam between the two images and moving the specimen to a new position so that the displacement of the beam caused by the tilting of the beam is compensated. Accordingly, while displaying/recording the second image the beam scans over the same area as it has scanned while displaying/recording the first image. A deflection and focussing system for the compensation of chromatic aberration and examples of accurate measurements of structures on the surface of a semiconductor are also described. La présente invention concerne un procédé pour examiner un échantillon avec un faisceau de particules chargées. Le procédé consiste à fournir une ou plusieurs images de l'échantillon faites à partir d'angles de vision différents de manière à ce qu'en comparaison à une image unique de l'échantillon on puisse accéder à une multitude d'informations supplémentaires sur l'échantillon. On obtient différentes angles de vision (d'incidence) en inclinant un faisceau entre les deux images et en déplaçant l'échantillon de manière à le mettre dans une nouvelle position pour compenser l'inclinaison du faisceau provoquée par le déplacement de celui-ci. De façon similaire, lors de l'affichage/enregistrement de la deuxième image le faisceau balaie la même zone qu'il a balayé lors de l'affichage/enregistrement de la première image. L'invention concerne aussi un système de déflexion et de focalisation destiné à compenser l'aberration chromatique et des exemples de mesures précises des structures à la surface d'un semi-conducteur.
AbstractList The present invention provides a method for the examination of specimen with a beam of charged particles. The method provides one or more images of the specimen made with different view angles, so that, compared to a single image of the specimen, a lot of additional information about the specimen can be accessed. The different view angles (angles of incidence) are achieved by tilting the beam between the two images and moving the specimen to a new position so that the displacement of the beam caused by the tilting of the beam is compensated. Accordingly, while displaying/recording the second image the beam scans over the same area as it has scanned while displaying/recording the first image. A deflection and focussing system for the compensation of chromatic aberration and examples of accurate measurements of structures on the surface of a semiconductor are also described. La présente invention concerne un procédé pour examiner un échantillon avec un faisceau de particules chargées. Le procédé consiste à fournir une ou plusieurs images de l'échantillon faites à partir d'angles de vision différents de manière à ce qu'en comparaison à une image unique de l'échantillon on puisse accéder à une multitude d'informations supplémentaires sur l'échantillon. On obtient différentes angles de vision (d'incidence) en inclinant un faisceau entre les deux images et en déplaçant l'échantillon de manière à le mettre dans une nouvelle position pour compenser l'inclinaison du faisceau provoquée par le déplacement de celui-ci. De façon similaire, lors de l'affichage/enregistrement de la deuxième image le faisceau balaie la même zone qu'il a balayé lors de l'affichage/enregistrement de la première image. L'invention concerne aussi un système de déflexion et de focalisation destiné à compenser l'aberration chromatique et des exemples de mesures précises des structures à la surface d'un semi-conducteur.
Author PEARL, ASHER
BEN-AV, RADEL
PETROV, IGOR
GOLDENSHTEIN, ALEX
HAAS, NADAV
ADAMEC, PAVEL
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DocumentTitleAlternate PROCEDE ET SYSTEME D'EXAMEN D'UN ECHANTILLON AVEC UN FAISCEAU DE PARTICULES CHARGEES
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GOLDENSHTEIN, ALEX
HAAS, NADAV
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APPLIED MATERIALS, INC
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Snippet The present invention provides a method for the examination of specimen with a beam of charged particles. The method provides one or more images of the...
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SourceType Open Access Repository
SubjectTerms BASIC ELECTRIC ELEMENTS
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
MEASURING ANGLES
MEASURING AREAS
MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS
PHYSICS
SEMICONDUCTOR DEVICES
TESTING
Title METHOD AND SYSTEM FOR THE EXAMINATION OF SPECIMEN USING A CHARGED PARTICLE BEAM
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